Canvas Size Converter
Convert canvas dimensions between pixels, inches, cm, mm, points, and picas. Custom DPI support.
Pixel conversions use DPI (default 96). Change DPI for print or high-res displays.
How to Use Canvas Size Converter
Follow these simple steps to get the best results.
Enter a size and unit
Type a value and choose the source unit: pixels, inches, cm, mm, points or picas.
Choose the target unit
Pick the unit you want the result in. When pixels are involved, set the DPI (default 96) the conversion should assume.
Read and copy the result
The converted size shows instantly; use Swap to flip the units or Copy to save the value.
Frequently Asked Questions
Everything you need to know about Canvas Size Converter.
About the Canvas Size Converter Tool
Adjust the canvas dimensions of any image with surgical precision using the ToolFlic Canvas Size Converter. Unlike basic resizing tools that stretch or compress your image, our converter adds custom padding or crops edges to change the overall canvas area while keeping your original content perfectly intact. It is the ideal solution for preparing images for social media headers, print layouts, and e-commerce product galleries.
Core Advantages
Achieve pixel-perfect compositions for any platform or print requirement. Add uniform borders for framing, create consistent spacing for gallery grids, or adapt a landscape photo to a portrait format without losing critical subject matter. Our tool supports JPEG, PNG, and WebP formats and lets you set a custom background fill color to match any design context.
Architecture & Security
Built on a high-fidelity Canvas compositing engine that renders your original image onto a newly sized canvas buffer without re-encoding or degrading the source pixels. Background fill is applied using GPU-accelerated draw calls, ensuring that even high-resolution images up to 4K are processed instantly with zero quality loss.
Under the Hood: the Canvas Size Converter explained properly
No marketing filler — just the mechanics, the trade-offs and the real limits, explained clearly.
How it actually works
Every unit here is defined against the inch, so the maths is exact rather than approximate: 1 inch equals 2.54 centimetres, 72 points or 6 picas, and on the web 1 inch equals 96 CSS pixels by definition, which is why the tool shows 1 px = 1/96 inch.
Type a value, choose the source unit and the target unit across pixels, inches, centimetres, millimetres, points and picas. As soon as pixels are involved on either side, a DPI field appears, defaulting to 96. Pixels are a count, inches are a physical length, and DPI is the bridge between them, so the tool cannot convert between them without being told which density you mean.
What that means for your results
The single most common mistake in print work is assuming screen density is print density. A 1200 by 800 pixel graphic is 12.5 by 8.3 inches at 96 DPI and looks perfectly sharp on a monitor, but the same pixels at 300 DPI are only 4 by 2.67 inches, and that is the size you actually get on paper.
Magazine-quality print wants 300 DPI, large-format posters viewed from a distance tolerate 100 to 150, and 72 or 96 is a screen number only. Set the DPI here to the destination and you instantly see whether you have enough pixels.
Where it falls short — honestly
This converts measurements; it does not resample an image. Changing 1000 pixels into 10 inches at 100 DPI does not add or remove a single pixel, and if the count is insufficient you still have to go and enlarge the artwork in Image Resizer or Image Upscaler.
Also remember that print dimensions are never divisible by round numbers: 210mm is 8.268 inches, so a design snapped to whole inches will not fill an A4 sheet exactly. Work in one unit system per document and let the converter check the other.
A real end-to-end workflow
A standard pre-print check: ask for the target physical size and DPI, enter the pixel width here to see whether your file qualifies, and if it falls short, resize the source image up before exporting.
For social artwork, use it the other way, convert the required millimetre print card into pixels so the same design works in both places, then generate the file with Dummy Image Generator at those exact dimensions.
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